Semiconductor light emitting devices including red phosphors that exhibit good color rendering properties and related red phosphors
US-9219202-B2 · Dec 22, 2015 · US
Light emitting composite with phosphor components
US8968600B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968600-B2 |
| Application number | US-201213402668-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 22, 2012 |
| Priority date | Feb 24, 2011 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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Disclosed herein are phosphor compositions having high gadolinium concentrations. Some embodiments include a thermally stable ceramic body comprising an emissive layer, wherein said emissive layer comprises a compound represented by the formula (A 1-x-z Gd x D z ) 3 B 5 O 12 , wherein: D is a first dopant selected from the group consisting of Nd, Er, Eu, Mn, Cr, Yb, Sm, Tb, Ce, Pr, Dy, Ho, Lu and combinations thereof; A is selected from the group consisting of Y, Lu, Ca, La, Tb, and combinations thereof; B is selected from the group consisting of Al, Mg, Si, Ga, In, and combinations thereof; x is in the range of about 0.20 to about 0.80; and z is in the range of about 0.001 to about 0.10. Also disclosed are thermally stable ceramic bodies that can include the composition of formula I. Methods of making the ceramic body and a lighting device including the ceramic body are also disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1. A thermally stable ceramic body comprising an emissive layer, wherein said emissive layer comprises: a compound represented by the formula (A 1-x-z Gd x D z ) 3 B 5 O 12 , wherein: D is a first dopant selected from the group consisting of Nd, Er, Eu, Mn, Cr, Yb, Sm, Tb, Ce, Pr, Dy, Ho, Lu and combinations thereof; A is selected from the group consisting of Y, Lu, Ca, La, Tb, and combinations thereof; B is selected from the group consisting of Al, Mg, Si…
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Classifications
- C09K11/7774Primary
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
- H10H20/822Primary
Electricity · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8968600B2 cover?
- Disclosed herein are phosphor compositions having high gadolinium concentrations. Some embodiments include a thermally stable ceramic body comprising an emissive layer, wherein said emissive layer comprises a compound represented by the formula (A 1-x-z Gd x D z ) 3 B 5 O 12 , wherein: D is a first dopant selected from the group consisting of Nd, Er, Eu, Mn, Cr, Yb, Sm, Tb, Ce, Pr, Dy, Ho, Lu a…
- Who is the assignee on this patent?
- Zhang Bin, Mochizuki Amane, Nakamura Toshitaka, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C09K11/7774. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).